1. Univ. College London (United Kingdom)
2. LESIA – Observatoire de Paris (France)
3. STFC Rutherford Appleton Lab. (United Kingdom)
4. MPI for Solar System Research (Germany)
5. European Space Research and Technology Ctr. (Netherlands)
6. Univ. Bordeaux 1 (France)
7. INAF, Osservatorio Astronomico di Palermo (Italy)
8. Institut d'Astrophysique Spatiale, Univ. de Paris-Sud, CNRS (France)
9. INAF - IAPS (Italy)
10. Katholieke Univ. Leuven (Belgium)
11. Space Research Ctr. (Poland)
12. Cardiff Univ. (United Kingdom)
13. Institut d'Astrophysique, Univ. Paris VI, CNRS (France)
14. Univ. Wien (Austria)
15. SRON Netherlands Institute for Space Research (Netherlands)
16. Dublin Institute for Advanced Studies (Ireland)
17. Institut de Ciències de l'Espai (Spain)
18. Univ. of Oxford (United Kingdom)
19. Lab. de Météorologie Dynamique (France)
20. CEA-Saclay (France)
21. CNR-INAF (Italy)
22. Institut de Ciencies de l’Espai (Spain)
23. Univ. of Florence (Italy)
24. Univ. of Bordeaux (France)
25. UK Astronomy Technology Ctr. (United Kingdom)
26. Univ. College London (United States)
27. Ctr. de Astrobiología (Spain)